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Evidence for an extraterrestrial impact 12,900 years ago that contributed to the megafaunal extinctions and the Younger Dryas cooling
R. B. Firestone, A. West, J. P. Kennett et al., 2007. Proceedings of the National Academy of Sciences 104(41), 16016–16021.
The founding paper. Reports a thin layer at about 12.9 ka at Clovis-age sites across North America with peaks in magnetic grains with iridium, magnetic microspherules, charcoal, soot, carbon spherules, glass-like carbon with nanodiamonds and fullerenes with extraterrestrial helium, and proposes that one or more low-density objects exploded over northern North America, triggering the Younger Dryas cooling and contributing to megafaunal extinction.
What it's used for here
The original statement of the hypothesis and its first set of proxies.
Cited by on this site 11 records
Cite it
Firestone, R. B., West, A., Kennett, J. P., Becker, L., Bunch, T. E., Revay, Z. S., Schultz, P. H., & and others (2007). Evidence for an extraterrestrial impact 12,900 years ago that contributed to the megafaunal extinctions and the Younger Dryas cooling. Proceedings of the National Academy of Sciences 104(41), 16016–16021. https://doi.org/10.1073/pnas.0706977104
@article{firestone2007evidence,
author = {Firestone, R. B. and West, A. and Kennett, J. P. and Becker, L. and Bunch, T. E. and Revay, Z. S. and Schultz, P. H. and {and others}},
title = {Evidence for an extraterrestrial impact 12,900 years ago that contributed to the megafaunal extinctions and the Younger Dryas cooling},
journal = {Proceedings of the National Academy of Sciences 104(41), 16016–16021},
year = {2007},
doi = {10.1073/pnas.0706977104},
url = {https://doi.org/10.1073/pnas.0706977104}
}TY - JOUR TI - Evidence for an extraterrestrial impact 12,900 years ago that contributed to the megafaunal extinctions and the Younger Dryas cooling AU - Firestone, R. B. AU - West, A. AU - Kennett, J. P. AU - Becker, L. AU - Bunch, T. E. AU - Revay, Z. S. AU - Schultz, P. H. AU - and others PY - 2007 JO - Proceedings of the National Academy of Sciences 104(41), 16016–16021 DO - 10.1073/pnas.0706977104 UR - https://doi.org/10.1073/pnas.0706977104 ER -
Firestone, R. B. et al.. “Evidence for an extraterrestrial impact 12,900 years ago that contributed to the megafaunal extinctions and the Younger Dryas cooling.” Proceedings of the National Academy of Sciences 104(41), 16016–16021 (2007). https://doi.org/10.1073/pnas.0706977104.